Microsoft last night released a flood of unexpected patches. Yes, that’s a Thursday night dump. No, there weren’t any pressing security fixes – at least, none that were advertised. I have no idea why Microsoft’s pushing this offal out the Automatic Update chute.

In addition to a scattering of Preview patches for Win7, 8.1 and Server 2002 – which are usually posted on the third “Week C” Tuesday of the month – and the Surface Pro 3 firmware patch that was announced, but not delivered, Wednesday, we have two new cumulative updates: one for Win10 Anniversary Update (version 1607) and one for Win10 Creators Update (version 1703). Susan Bradley has a full list with links on the AskWoody site.

KB 4077525 - The Feb. 22 cumulative update for Win10 version 1607 and Server 2016 brings the build number to 14393.2097. This is the second cumulative update for 1607 in the past nine days. There’s no mention of any security patches. It looks like a big, big bug fix.

KB 4077528 - The Feb. 22 cumulative update for Win10 version 1703 brings the build number to 15063.936. Again, it’s the second cumulative update for 1703 in the past nine days and, again, there don’t appear to be any security patches. It’s a relatively small bug fix.

It isn’t at all clear why there’s no fix for Win10 Fall Creators Update, version 1709. That’s the Windows version that had all sorts of problems with this month’s first round of cumulative updates.

The expectation is that a similar big cumulative update for 1709 is due any time now – possibly today or next Tuesday. I have no idea if it’ll have security components, but it sure as shootin’ better fix the USB problems widely reported with last week’s cumulative update.

As of last night, these patches hadn’t apparently been sent out to WSUS servers, but they were available through Windows Update. In fact, if you have Automatic Update turned on, you may have received the patches overnight. Lucky you.